In bolt-making machines



. 2 Sheets-Sheet 2. F. WATKINS. Bolt-Heading Machine.

Patented Dec. 8, 1868.

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FRANCIS WATKINS,OF BIRM'INGHAM, ENGLAND.

Letters. Patent No. 84,7 82, dated Deoemlie'rfi, 1868 patented in England December 28, 1866.

IMPROVEMENT- m BOLT-MAKING- momrvns- To all whom it may concern Be it known that I, Framers farms, of Birmingham, in the county of Warwick, England, have invented a new and improved Machine for Forging and Shaping Rivets, Screw-Blanks, 800., and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to-make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- V Figure 1, sheet 1, represents a side elevation, partly in section, of my invention.

Figure 2, sheet 11, represents a vertical transverse section of the same, the plane of section being indi cated by the line x a, fig. 3.

Figure 3 is a plan or top view of the same.

Figure 4 is a detail sectional view of the same, on an enlarged scale, the plane of section being indicated by the line y y, fig. 3 7

Similar letters of reference indicate corresponding parts. 1

This invention relates to a new machine for heading rivets, screwblanks, and other bars, when the same are prepared in pieces of the required length.

The machine is somade that two sets of headingdevices are in constant operation, a head being formed alternately on eachmachine, so that the power required for one machine is utilized to'operate two.

The invention consists chiefly in the use of two.

rotating disks mounted at the ends of a shaft, on which shaft is also placed and keyed a ratchet or feed-wheel,

worked by a slotted rod, which is pin-j ointed to a lever, acted on by a earn on another shaft.

In the periphery of each of the disks or die-carriers are placed dies for receiving the shanks or necks of the rivets, bolts, screw-blanks, or other articles to be headed.

Inside of these dies are tippers or sliding bolts,

for holding the blanks to their work, and for discharging the same whenfinished.

These tippers perform their work by means of their inner ends being cranked and resting in the grooves of a stationary cam, one such camgbeing arranged within each rotating disk.

. The tippers are or may be made of two pieces, screwed together, so that they may be adapted to hold blanks of variouslengths to be headed.

The two sides of the machine are alike, but the dies in the disks are arranged. so that blanks are headed alternately on-one and on the other side; or the disks are hung on separate shafts, which receive, alternately, intermittent rotary motion, by means of the slotted I rods, working in the'vratohet-wheels, of which, in the latter case, two are used, one on each shaft.

The rods or bars of metal are heated in a suitable furnace, and are then cut into pieces of the required length by suitable mechanism, which may, if desired, be attached to this machine. 7

These cut-off portions or blanks are placed into the diesformed in the rotating disks, and as each. blank arrives opposite the reciprocating heading-tool, the motion of the disk is arrested, and the heading-tool is caused to advance by suitable mechanism, and to press that portion of the'blank which projectsfiom the periphery of the disk into a head of the required form.

The heading-tool can be-rernove'd, so that it may be replaced by one having a diiferent form, so that heads of any suitable or desired shape may be formed on this machine.

When the head is formed on a blank, the motion of the disk is resumed, and the next blank is brought into machines are in constant, uuceasing operation, and the same power which would be required to drive one ma ohine is utilized to drive two, without loss of time to' 7 either. When a blank has been headed, it is gradually pushed out by the tippers, and is finally ejected when it arrives below the axis of the disk.

In the accompanying drawings- A represents the frame of the machine.

B is a horizontal driving-shaft, on which are fastened a pinion, a, a fiy-wh eel, b, and asuitable driving-pulley.

The pinion ameshes into the teeth of a gear-wheel, c, and thus drives a shaft, 0, on which the gear-wheel is mounted.

' On the ends of the shaft 0 are mounted two cams, D and D, whose object is to actuate the slides E and E respectively, in the ends of which theheading-tools F F are held. r v

The cams D D are of equal shape, but are made to project from opposite sides of the shaft 0, so that the slides E E are actuated alternately that is, one slide moves forward while the other moves back, and mice re'rsa.

The heading-tools are held by means of screws, pins,

or otherwisefin their respective slides, and can be removed and replaced whenever desired.

In the face of each heading-tool is a cavity of the required form, as is clearly shown in-fig. 4.

' G is a stationary horizontal shaft, having its hearings in the frame A.

Around this shaft G are arranged two tubular axles, H and H, each one surrounding about one-half the length of the shaft G.

Each axle H H carries a ratchet-wheel, d d, as shown, and a disk, I I, at its end. 7

Upon the shaft 0 are mounted two eccentrics, e and e, which are opposite to and in line with the wheels (I and d. r

A ring, f f, is laid around each earn, 0 c, and is con nected with arod, g g, having a hook formed atits end,

said hook resting upon the ratchet-wheel, opposite the cam, so that, as by the revolution of the shaft 0 the rod 9 is drawn backpthe hoo'k, which catches over a tooth on the ratchet-wheel, will carry the axle H or H partly around, and thus intermittent rotary motion is imparted to the axles H H.

The cams e e are alike, but are set in different positions upon the shaft 0, so that only one axle, Hor H, is moved at once, while the hook g of the other axle moves forward to catch another tooth of its ratchetwheel.

Each disk II has an outward-projecting flange, h, around its periphery, in which a series of radial perforations is arranged.

Into each of these perforations is placed a tubular tool, 42, having a head, i, which may project from or be countersunk in the edge of the disk, as is clearly shown the required shape to the neck of the blank.

J J are two cams, mounted respectively on the ends 'of the stationary shaft G, so as to be outside of the face of each disk, and within the flange h of the same, as shown in figs. l and 4.

In the inner face of each cam J J is arranged. a groove, as shown in fig. 4, into which-flanges, projecting from blocks j j, are fitted, as shown.

Of the blocks j, an equal number is provided in each disk as there are tools in the same;

To each block j is screwed or otherwise fastened a bar or rod, K, reaching into one of the tubes 6, as shown.

As the disk rotates, the rods K and blocks j are carried around with it, and as they also move in the grooves of the cams J J, they are gradually pushed out and drawn in.

Y The number of the teeth of the ratchet-wheels (l d is equal to that of the perforations in each disk, and they are so arranged that when a move of the hollow shaft carrying the disk is completed, a tool, 4, will be opposite to the heading-tool.

Then the heading-tool is moved towards the disk, and ,is drawn back again, and not until then does'the disk begin to move again.

Having described the construction, I will now proceed to describe the operation of the machine.

The machine being in motion, the blanks, which are cut, from a rod of the required thickness, into the required lengths, are placed, by hand or machinery, into those perforations or" the disk which are at the time above the axis of the same.

As the machine is in m0ti0n,'0tl1er perforations will continually arrive at the top, and are thus filled.

The lengths of the rods K are adjusted so that the required portion of the blank projects from the tool 1', when the same arrives opposite to the heading-tool F or F.

As the latter moves towards the disk it presses this projecting portion of the blank into the required form, so that a head and shoulder of the required shape are formed on the blank, as is clearly indicated in figs. 1 and 4.

The disk is then revolved again to bring up the next blank, and the same motion partly ejects the finished blank from its holder 11, which ejection is wholly efi'ected when it arrives at the under side of the disk.

The tool 1, thus emptied, is then free to receive another blank.

The disks I I may-also, if desired, be mounted on one shaft.

In that case their perforations would be arranged in different positions, and the ratchet-wheel would receive as many teeth as there are perforations in both disks, so that each motion of the shaft would bring a blank in one of the disks against the heading-tool.

If desired, the disks may-also be arranged so that blanks are being headed simultaneously in both, but it is evident that in that case nearly double the power would be used. v

I claim as new, and desire to secure by Letters Patent The arrangement, herein shown and described, of two bolt-heading machines, constructed substantially as described, and so as to'operate alternately, as set forth.

F. WATKINS.

Witnesses: I

WM. F. MCNAMARA, ALEX. F. RoBnR'rs. 

